Has anyone installed the Yamaha Helm Master Ex Joystick themselves? It looks like a plug and play. I tried to install the joystick on my GW 235 while on a trailer, but it seems to not be linking up. All the rigging looks good. The yamaha display recognizes that the joystick is in place (I see the joystick listed in the devices). The joystick lights up blue when the power is on; however, when I press the "joystick" button, it just blinks blue a couple of times without staying a solid blue and the wheel locking up (which I assume is what suppose to happen when working properly). I have been testing the outboard (F300) in a big tub full of water to start it up. Anyone experience any success? Thanks.